Abstract
In this work, we have adopted melt-spinning technique followed by spark plasma sintering (SPS) to synthesize a p-type nanostructured Si80Ge20 alloy. To illustrate the impact of the technique, the results are compared with that of prepared by ball milling and subsequent SPS. The room temperature XRD of the alloys prepared by both the techniques confirms that they crystallize with diamond-like cubic structure of space group Fd3¯m. The remarkably decreased thermal conductivity and increased Seebeck coefficient results in a higher ZT of melt spun sample (nearly ∼46% higher at room temperature) as compared to the ball milled sample. The short preparation time of melt spun p-type Si80Ge20 alloy coupled with its enhanced thermoelectric performance indicate that this technique provides a novel strategy to improve the thermoelectric properties of SiGe alloys thus making this synthesis process of interest for commercial purposes.
| Original language | English |
|---|---|
| Pages (from-to) | 344-350 |
| Number of pages | 7 |
| Journal | Journal of Alloys and Compounds |
| Volume | 781 |
| DOIs | |
| Publication status | Published - 15-04-2019 |
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All Science Journal Classification (ASJC) codes
- Mechanics of Materials
- Mechanical Engineering
- Metals and Alloys
- Materials Chemistry
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Melt spinning : A rapid and cost effective approach over ball milling for the production of nanostructured p-type Si80Ge20 with enhanced thermoelectric properties. / Thomas, Riya; Rao, Ashok; Chauhan, Nagendra S.; Vishwakarma, Avinash; Singh, Niraj Kumar; Soni, Ajay.
In: Journal of Alloys and Compounds, Vol. 781, 15.04.2019, p. 344-350.Research output: Contribution to journal › Article
TY - JOUR
T1 - Melt spinning
T2 - A rapid and cost effective approach over ball milling for the production of nanostructured p-type Si80Ge20 with enhanced thermoelectric properties
AU - Thomas, Riya
AU - Rao, Ashok
AU - Chauhan, Nagendra S.
AU - Vishwakarma, Avinash
AU - Singh, Niraj Kumar
AU - Soni, Ajay
PY - 2019/4/15
Y1 - 2019/4/15
N2 - In this work, we have adopted melt-spinning technique followed by spark plasma sintering (SPS) to synthesize a p-type nanostructured Si80Ge20 alloy. To illustrate the impact of the technique, the results are compared with that of prepared by ball milling and subsequent SPS. The room temperature XRD of the alloys prepared by both the techniques confirms that they crystallize with diamond-like cubic structure of space group Fd3¯m. The remarkably decreased thermal conductivity and increased Seebeck coefficient results in a higher ZT of melt spun sample (nearly ∼46% higher at room temperature) as compared to the ball milled sample. The short preparation time of melt spun p-type Si80Ge20 alloy coupled with its enhanced thermoelectric performance indicate that this technique provides a novel strategy to improve the thermoelectric properties of SiGe alloys thus making this synthesis process of interest for commercial purposes.
AB - In this work, we have adopted melt-spinning technique followed by spark plasma sintering (SPS) to synthesize a p-type nanostructured Si80Ge20 alloy. To illustrate the impact of the technique, the results are compared with that of prepared by ball milling and subsequent SPS. The room temperature XRD of the alloys prepared by both the techniques confirms that they crystallize with diamond-like cubic structure of space group Fd3¯m. The remarkably decreased thermal conductivity and increased Seebeck coefficient results in a higher ZT of melt spun sample (nearly ∼46% higher at room temperature) as compared to the ball milled sample. The short preparation time of melt spun p-type Si80Ge20 alloy coupled with its enhanced thermoelectric performance indicate that this technique provides a novel strategy to improve the thermoelectric properties of SiGe alloys thus making this synthesis process of interest for commercial purposes.
UR - http://www.scopus.com/inward/record.url?scp=85058142852&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85058142852&partnerID=8YFLogxK
U2 - 10.1016/j.jallcom.2018.11.414
DO - 10.1016/j.jallcom.2018.11.414
M3 - Article
VL - 781
SP - 344
EP - 350
JO - Journal of Alloys and Compounds
JF - Journal of Alloys and Compounds
SN - 0925-8388
ER -